Hi,
Am 05.07.2011 15:30, schrieb Jens Wahnes:
> Philipp Wendler wrote:
>>> [1] All speed measurements were done with several runs of
>> dd if=/dev/zero of=DEV bs=100M count=100
>> Did you consider using another block size?
So far I tested with a large block size only, because I was expecting a
bad performance for small block sizes due to the raid5 anyway.
But I have now run a series of tests with 4K, 1M and 10M. Block size
indeed affects the performance (although not as much as I would have
expected), but the difference for with/without encryption still remains
as large as before:
without encryption: 150-180 MB/s
with encryption: 30-40 MB/s
Greetings, Philipp